CN107587353B - Low-temperature biopolishing acidic cellulase preparation and preparation method thereof - Google Patents
Low-temperature biopolishing acidic cellulase preparation and preparation method thereof Download PDFInfo
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Abstract
The invention relates to an acidic cellulase preparation for low-temperature biological polishing and a preparation method thereof, wherein the acidic cellulase preparation comprises the following components in parts by weight: acid cellulase: 500-650 parts; and (3) pectinase: 30-100 parts; alcohol ether: 50-150 parts; sodium chloride: 50-100 parts; calcium chloride: 0-50 parts; c, loosening: 0-3 parts of a solvent; deionized water: 50-300 parts. 1) Pouring the weighed deionized water, the kasong, the calcium chloride and the sodium chloride into a stirring tank, rotating at the speed of 30-50r/min, and stirring at normal temperature until the materials are completely dissolved; 2) pouring the weighed alcohol ether into the solution, adjusting the rotating speed to 10-20r/min, and stirring at normal temperature until the alcohol ether is uniformly mixed; 3) pouring the weighed pectinase and acid cellulase into the solution, adjusting the rotating speed to 10-20r/min, and stirring at normal temperature; 4) after all the raw materials are put into the stirring tank, stirring for 10min, then discharging 10-20 parts from the bottom, and putting from the top of the tank; 6) stirring for 5min, discharging while stirring, and bottling. Compared with the prior art, the polishing solution has the advantages of being capable of having a high-efficiency polishing effect under the condition of low temperature (20-40 ℃) and the like.
Description
Technical Field
The invention relates to a fabric treating agent, in particular to an acidic cellulase preparation for low-temperature biological polishing and a preparation method thereof.
Background
Enzymes are biocatalysts that are synthesized in the organism under certain conditions as required for life activities. Enzymes participate in almost all chemical reactions in the organism and are the essential material basis for life activities. The biological enzyme has the obvious characteristics of strong specificity, high catalytic efficiency, mild reaction conditions and the like, is widely applied to various aspects of food, light industry, medicine, environmental protection, energy and the like at present, and is not exceptional in the field of textile printing and dyeing.
The cellulase is an enzyme preparation with a large using amount in the field of textile printing and dyeing, and the cellulase is mainly divided into acid cellulase and neutral cellulase. The cellulase polishing and finishing is a process for realizing the smooth finishing of the cloth cover by decomposing the tail end fiber of the cellulose and applying a certain mechanical acting force. The existing acidic cellulase belongs to medium-high temperature enzyme preparations, the optimal use temperature is 50-60 ℃, and the pH value use range is 4.5-5.5. The polishing process using acid cellulase in a printing and dyeing mill is generally divided into two processes: a. polishing and dyeing: pretreatment oxygen bleaching → neutralization → deoxidization → biological enzyme polishing → water washing → dyeing → water washing → soap boiling → water washing → dehydration drying; b. dyeing and polishing: pretreatment oxygen bleaching → neutralization → deoxidization → dyeing → washing with water → soaping → washing with water → biological enzyme polishing → washing with water → dehydration and drying.
The printing and dyeing mill and the water washing mill need to use a large amount of steam for heating the working solution, part of the steam is supplied with heat through the central heating of a thermal power plant, and part of the steam is supplied with heat through a boiler of the mill. In the past, coal burning is mainly used, and the combustion of the coal can generate a large amount of SO2、CO2And smoke and other pollutants, causing serious atmospheric pollution. The strictest environmental protection law is formally implemented in 1 month and 1 day of 2015, coal-to-gas schemes are gradually entered in all regions of the country, although the use of natural gas can effectively improve the atmospheric pollution caused by coal combustion, the use cost of the natural gas is greatly improved compared with that of the coal, so that the use temperature of an enzyme preparation is reduced, the use of steam is reduced, the pollution to the environment caused by the combustion of the coal or the natural gas is reduced, the purposes of energy conservation, emission reduction, low carbon and environmental protection are achieved.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a low-temperature biopolishing acidic cellulase preparation and a preparation method thereof.
The purpose of the invention can be realized by the following technical scheme: the acidic cellulase preparation for low-temperature biological polishing is characterized by comprising the following components in parts by weight:
acid cellulase: 500-650 parts;
and (3) pectinase: 30-100 parts;
alcohol ether: 50-150 parts;
sodium chloride: 50-100 parts;
calcium chloride: 0-50 parts;
c, loosening: 0-3 parts of a solvent;
deionized water: 50-300 parts.
The enzyme activity of the acidic cellulase is 10000-20000 IU/ml, and the acidic cellulase is a commercially available product and is selected from acidic cellulases produced by Yichangdong sunshine company.
The enzyme activity of the pectinase is 5000-8000 IU/ml, and the pectinase is a commercially available product and is selected from acidic pectinase produced by DuPont.
The alcohol ether has the structure as follows: EO-PO-EO, wherein EO is ethylene oxide, PO is propylene oxide, EO number is 3-15, carbon chain number is C12-C18。
Sodium chloride: commercial industrial grade;
calcium chloride: a commercially available food grade;
c, loosening: commercial industrial grade;
deionized water: shanghai Chengyu R/O deionized water after reverse osmosis treatment.
The preparation method of the acidic cellulase preparation for low-temperature biological polishing is characterized by comprising the following steps of:
1) pouring the weighed deionized water, the kasong, the calcium chloride and the sodium chloride into a stirring tank, rotating at the speed of 30-50r/min, and stirring at normal temperature until the materials are completely dissolved;
2) pouring the weighed alcohol ether into the solution, adjusting the rotating speed to 10-20r/min, and stirring at normal temperature until the alcohol ether is uniformly mixed;
3) pouring the weighed pectinase and acid cellulase into the solution, adjusting the rotating speed to 10-20r/min, and stirring at normal temperature;
4) after all the raw materials are put into the stirring tank, stirring for 10min, then discharging 10-20 parts from the bottom, and putting from the top of the tank;
6) stirring for 5min, discharging while stirring, and bottling.
The deionized water is prepared by adopting a reverse osmosis device.
The invention provides a low-temperature biopolishing acid cellulase preparation, which is a mixture of acid cellulase preparation, pectinase and alcohol ether. The cotton fiber contains about 94% of cellulose component and about 6% of symbiont (such as pectin, wax and the like), and the 6% or so of symbiont has an influence on the performances of water absorption, dyeing, whiteness and the like of the fabric and also has a certain influence on the effect of the cellulose in polishing finishing. The pectinase is mainly used for removing impurities such as pectic substances on the surface of the fiber, so that the cellulase can fully enter the fiber and decompose amorphous areas of polysaccharide chains of the fiber and the tail ends of the polysaccharide chains, and the cellulose is decomposed into protein of oligosaccharide or monosaccharide. The alcohol ether auxiliary agent has hydrophilic groups, can improve the hydrophilicity of the fiber and improve the binding capacity of the cellulase and the pectinase with the fiber. The alcohol ether auxiliary agent also has the functions of dispersing, cleaning and the like, and can disperse the indigo dye which is washed off in water into an aqueous solution in the washing of the jeans, so that the indigo dye is not easy to be re-stained on the fabric, and the anti-staining effect is improved.
Compared with the prior art, the acidic cellulase preparation for low-temperature biological polishing provided by the invention can have a high-efficiency polishing effect under the condition of low temperature (20-40 ℃); the conventional biological polishing needs to be carried out at the temperature of 55-60 ℃, and the energy consumption is high; the acidic cellulase preparation can exert nearly 100% of efficiency at 40 ℃ and about 80% of efficiency at 30 ℃, so that the use temperature is reduced, the use amount of steam is reduced, and CO is reduced2、SO2And the like. On the fermentation washing and polishing of the jeans, the strength damage of the product is smaller than that of the common acid cellulase, the staining-resistant effect is better than that of the common acid cellulase, the jeans have less color loss under the low-temperature condition, and the original color of the jeans is ensured.
Drawings
FIG. 1 is a graph showing the relative efficiency of the enzyme preparation prepared according to the present invention at different temperatures;
FIG. 2 is a graph showing the relative efficiency of the enzyme preparations prepared according to the present invention at different pH values.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments.
Example 1:
enzyme activity determination
1.1 enzyme activity determination method: the amount of enzyme required to release 1. mu. mol of reducing sugars by degradation from a 10mg/ml solution of carboxymethylcellulose at 50 ℃ and a pH of 4.8 was one unit of activity (IU) per minute in IU/ml.
Adding 0.5ml CMC substrate into each of the five test tubes, and preheating with enzyme solution to be tested in 50 deg.C water bath for 5 min; adding 0.5ml of enzyme solution to be detected into the first test tube, the second test tube, the third test tube and the fourth test tube respectively, timing, and reacting in a water bath at 50 ℃ for 15 min; after the reaction is finished, adding 1.5ml of DNS reagent into each of the five test tubes, and supplementing 0.5ml of enzyme solution to be detected into the fifth test tube; taking out and shaking up five test tubes, and reacting in a wastewater bath for 5 min; it was rapidly cooled to room temperature and made up to 5ml with water. And taking the fifth test tube test solution as a reference to measure the absorbance of the first, second, third and fourth test tube test solutions under the condition of 540nm wavelength. The absorbance is preferably between 0.25 and 0.35, and the absolute value of the difference between the absorbance of the enzyme liquid reaction solution to be detected and the absorbance of the enzyme liquid reaction solution for level control cannot exceed 0.015.
Enzyme activity (IU/ml) ═ glucose equivalent/180/15/0.5). times.n
180: conversion of glucose from micrograms to micromoles, relative molecular weight of glucose
15: reaction time of test solution with substrate
0.5: the amount of enzyme to be measured added to the reaction
n: dilution factor of enzyme sample
1.2 enzyme activity determination:
the enzyme solution to be detected is prepared according to the following proportion:
cellulase: 650 parts of (B);
and (3) pectinase: 50 parts of a mixture;
alcohol ether: 60 parts;
sodium chloride: 50 parts of a mixture;
calcium chloride: 10 parts of (A);
c, loosening: 2 parts of (1);
deionized water: 178 parts of (B);
the enzyme solution and the 100 percent cellulase solution in the proportion are tested according to the enzyme solution test method, and the activity of the 100 percent pure enzyme solution is obtained through the test: 11000IU/ml, and the activity of the new enzyme solution according to the proportion is as follows: 10800IU/ml, which shows that the enzyme solution with the new mixing ratio reaches the activity concentration of 100 percent pure enzyme solution.
Preparation of enzyme preparation
The enzyme solution is prepared by the following method according to the proportion:
1) firstly, preparing deionized water by using a Shanghai Chengyu R/O reverse osmosis device for later use;
2) pouring weighed deionized water, cason, calcium chloride and sodium chloride into a stirring tank, rotating at the speed of 30r/min, and stirring at normal temperature until the materials are completely dissolved;
3) pouring the weighed alcohol ether into the solution obtained in the step 2, adjusting the rotating speed to 15r/min, and stirring at normal temperature until the alcohol ether is uniformly mixed;
4) pouring the weighed acidic pectinase and acidic cellulase into the solution obtained in the step 3, adjusting the rotating speed to 15r/min, and stirring at normal temperature;
5) after all the raw materials are put into the stirring tank, stirring for 10min, then discharging 10-20 parts from the bottom, and putting from the top of the tank;
6) stirring for 5min, discharging while stirring, and bottling.
Application of acid cellulase for low-temperature biological polishing in pure cotton knitting polishing
Fabric: 40S/1 pure cotton knitted semi-bleaching cloth
3.1 arranging 40S/1 pure cotton knitting half-bleaching in the acidic cellulase prepared by the method for low-temperature biological polishing, wherein the enzyme adding concentration is 0.5g/L, and the bath ratio is as follows: 1:10, treating for 60min under the conditions of 20 ℃, 30 ℃, 35 ℃, 40 ℃, 45 ℃, 50 ℃, 55 ℃, 60 ℃ and 70 ℃ respectively, and regulating the pH value to be 4.8, then heating to 80 ℃, and adding sodium carbonate to regulate the pH value to be more than 10 for 10 min. And (3) testing the weight loss rate of the knitting polishing, calculating the optimal use temperature condition and the temperature and polishing efficiency curve of the product through the weight loss rate, and calculating the efficiency by taking the highest weight loss rate as 100%. Tests show that the weight loss rate is the highest under the condition of 35-40 ℃, namely the polishing efficiency is the highest, the weight loss rate is about 80% under the condition of 30 ℃ and the weight loss rate is about 80% under the condition of 50 ℃, and therefore the optimal temperature of the enzyme solution is judged to be 35-40 ℃ and 10-20 ℃ lower than the optimal temperature of the conventional acid cellulase. The temperature and relative efficiency curve of the enzyme solution is shown in FIG. 1.
3.2 arranging 40S/1 pure cotton knitting half-bleaching in the acidic cellulase prepared by the method for low-temperature biological polishing, wherein the enzyme adding concentration is 0.5g/L, and the bath ratio is as follows: 1:10, treating for 60min at the temperature of 3.0 ℃, 3.5 ℃, 4.0 ℃, 4.5 ℃, 5.0 ℃, 5.5 ℃, 6.0 ℃, 6.5 ℃ and 7.0 ℃ respectively, and then heating to 80 ℃, adding sodium carbonate to adjust the pH value to be more than 10 and treating for 10 min. And (3) testing the weight loss rate of the knitting polishing, calculating the optimal use pH value condition of the product and the pH value and polishing efficiency curve through the weight loss rate, and calculating the efficiency by taking the highest weight loss rate as 100%. The weight loss rate under the condition that Ph is 5.0 ℃ is the highest, namely the polishing efficiency is the highest through tests. The weight loss rate was about 88% at pH 4.5 and about 85% at pH 5.5, and the optimum pH of the enzyme solution was determined to be 4.5-5.5 ℃. The pH value and relative efficiency curve of the enzyme solution is shown in figure 2.
Example 2: biological fermentation washing of acid cellulase for low-temperature biological polishing in washing of jeans
Fabric: 12 pieces of 40s/1 pure indigo knitted jean and 12 pieces of 10 x 10 woven blue black jean, wherein the weight is about 10 kg;
and (3) water washing equipment: industrial washing machine
The process comprises the following steps: putting the 24 jeans into an industrial washing machine, adding water to 100L, wherein the total water hardness is 200ppm, heating the water to 35 ℃ by steam, adjusting the pH value of the solution to about 5.0, rotating at the speed of 35 r/min, starting the rotary industrial washing machine, adding the low-temperature desizing enzyme, the low-temperature acidic cellulose solution and the dye-resistant powder while rotating, keeping the temperature and rotating for 40min, discharging the solution, and washing for 2 times by clear water.
The low-temperature acidic cellulase liquid comprises the following components in percentage by weight: acid cellulase: 550 parts of a mixture; and (3) pectinase: 80 parts of a mixture; alcohol ether: 150 parts; sodium chloride: 50 parts of a mixture; c, loosening: 3 parts of a mixture; deionized water: 207 parts of (A).
In the whole production process, the energy consumption is saved by 40 percent, the use of steam is reduced, and CO is reduced2And SO2The COD of the wastewater is reduced by 50 percent, and the enzyme preparation belongs to a completely biodegradable product and conforms to the national policy of energy conservation and emission reduction.
Example 3
A low-temperature biopolishing acidic cellulase preparation comprises the following components in parts by weight:
the enzyme activity is 10000IU/ml acid cellulase: 500 parts;
the enzyme activity is 5000IU/ml pectase: 100 parts of (A);
alcohol ether: 50 parts of a mixture;
sodium chloride: 50 parts of a mixture;
calcium chloride: 50 parts of a mixture;
c, loosening: 3 parts of a mixture;
deionized water: 300 parts.
The alcohol ether has the structure as follows: EO-PO-EO, wherein EO is ethylene oxide, PO is propylene oxide, EO number is 3-15, carbon chain number is C12-C18。
The acidic cellulase preparation for low-temperature biological polishing is prepared by the following method:
1) pouring weighed deionized water, cason, calcium chloride and sodium chloride into a stirring tank, rotating at the speed of 30r/min, and stirring at normal temperature until the materials are completely dissolved;
2) pouring the weighed alcohol ether into the solution, adjusting the rotating speed to 10r/min, and stirring at normal temperature until the alcohol ether is uniformly mixed;
3) pouring the weighed pectinase and acid cellulase into the solution, adjusting the rotating speed to 10r/min, and stirring at normal temperature;
4) after all the raw materials are put into the stirring tank, stirring for 10min, then discharging 10-20 parts from the bottom, and putting from the top of the tank;
6) stirring for 5min, discharging while stirring, and bottling.
The prepared acid cellulase preparation is used for washing and polishing the jeans, the strength damage of the product is smaller than that of the common acid cellulase, the staining-resistant effect is better than that of the common acid cellulase, the jeans have less color loss under the low temperature condition, and the original color of the jeans is ensured.
Example 4
A low-temperature biopolishing acidic cellulase preparation comprises the following components in parts by weight:
the enzyme activity is 20000IU/ml acid cellulase: 650 parts of (B);
the enzyme activity is 8000IU/ml pectase: 30 parts of (1);
alcohol ether: 150 parts;
sodium chloride: 100 parts of (A);
calcium chloride: 10 parts of (A);
c, loosening: 1 part;
deionized water: 50 parts of the raw materials.
The alcohol ether has the structure as follows: EO-PO-EO, wherein EO is ethylene oxide, PO is propylene oxide, EO number is 3-15, carbon chain number is C12-C18。
The acidic cellulase preparation for low-temperature biological polishing is prepared by the following method:
1) pouring weighed deionized water, kasong, calcium chloride and sodium chloride into a stirring tank, rotating at the speed of 50r/min, and stirring at normal temperature until the materials are completely dissolved;
2) pouring the weighed alcohol ether into the solution, adjusting the rotating speed to 20r/min, and stirring at normal temperature until the alcohol ether is uniformly mixed;
3) pouring the weighed pectinase and acid cellulase into the solution, adjusting the rotating speed to 20r/min, and stirring at normal temperature;
4) after all the raw materials are put into the stirring tank, stirring for 10min, then discharging 20 parts from the bottom and putting from the top of the tank;
6) stirring for 5min, discharging while stirring, and bottling.
The prepared acid cellulase preparation is used for washing and polishing the jeans, the strength damage of the product is smaller than that of the common acid cellulase, the staining-resistant effect is better than that of the common acid cellulase, the jeans have less color loss under the low temperature condition, and the original color of the jeans is ensured.
Claims (3)
1. The acidic cellulase preparation for low-temperature biological polishing is characterized by comprising the following components in parts by weight:
acid cellulase: 500-650 parts;
and (3) pectinase: 30-100 parts;
alcohol ether: 50-150 parts;
sodium chloride: 50-100 parts;
calcium chloride: 0-50 parts;
c, loosening: 0-3 parts of a solvent;
deionized water: 50-300 parts;
the enzyme activity of the acidic cellulase is 10000-20000 IU/ml;
the enzyme activity of the pectinase is 5000-8000 IU/ml;
the alcohol ether has the structure as follows: EO-PO-EO, wherein EO is ethylene oxide, PO is propylene oxide, EO number is 3-15, carbon chain number is C12-C18。
2. A method of preparing the low temperature biopolished acidic cellulase preparation of claim 1, comprising the steps of:
1) pouring the weighed deionized water, the kasong, the calcium chloride and the sodium chloride into a stirring tank, rotating at the speed of 30-50r/min, and stirring at normal temperature until the materials are completely dissolved;
2) pouring the weighed alcohol ether into the solution, adjusting the rotating speed to 10-20r/min, and stirring at normal temperature until the alcohol ether is uniformly mixed;
3) pouring the weighed pectinase and acid cellulase into the solution, adjusting the rotating speed to 10-20r/min, and stirring at normal temperature;
4) after all the raw materials are put into the stirring tank, stirring for 10min, then discharging 10-20 parts from the bottom, and putting from the top of the tank;
5) stirring for 5min, discharging while stirring, and bottling.
3. The method of claim 2, wherein the deionized water is prepared by a reverse osmosis apparatus.
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| CN112626870A (en) * | 2020-11-18 | 2021-04-09 | 湖南隆森生物科技有限公司 | Textile enzyme preparation and textile treatment method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101446040A (en) * | 2008-12-31 | 2009-06-03 | 中山市巴斯基化工有限公司 | Solid cellulase for washing denim garment |
| CN103589701A (en) * | 2013-11-18 | 2014-02-19 | 青岛蔚蓝生物集团有限公司 | Low-temperature cellulase and application thereof |
| CN104213416A (en) * | 2014-08-27 | 2014-12-17 | 东莞泛亚太生物科技有限公司 | Compounded deoxidizing and polishing enzyme preparation and textile printing and dyeing method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101446040A (en) * | 2008-12-31 | 2009-06-03 | 中山市巴斯基化工有限公司 | Solid cellulase for washing denim garment |
| CN103589701A (en) * | 2013-11-18 | 2014-02-19 | 青岛蔚蓝生物集团有限公司 | Low-temperature cellulase and application thereof |
| CN104213416A (en) * | 2014-08-27 | 2014-12-17 | 东莞泛亚太生物科技有限公司 | Compounded deoxidizing and polishing enzyme preparation and textile printing and dyeing method |
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